I have worked with your plugin over the last few weeks adding a number of features, and would love to submit the changes to you for possible adoption into the base plugin.

Features added:
-DDL/URL filter based on column
-Hide header (Do not display the header, works in some application with filtering)
-clickable links (Applying a URL to a column)
-Table ID (Apply Custom CSS, think this might be in your latest release)
-Custom Headers (Header not included in CSV)

If none of that made any sense and you're not familiar with version control, feel free to just email me a copy of your modified plugin. I'll review it and see what changes should be merged into the main branch.

Also, I'm currently working on a new plugin that combines the functionality of this and another plugin I wrote a while back -- http://wordpress.org/plugins/sorttable-post/ -- and things like customer header rows are definitely something I was planning to add to that. If you're interested, maybe we can collaborate on that as well...